Kamaruddin, I.S., A.S. Mustafa Kamal, A. Christianus, S.K. Daud, and L. Yu-Abit (2010). A study of zooplankton community in Pengkalan Gawi – Pulau Dula section of Kenyir Lake, Terengganu, Malaysia. International Conference on Food Research (ICFR). Putrajaya, Malaysia. Poster Presentation.
A STUDY OF ZOOPLANKTON COMMUNITY IN PENGKALAN GAWI – PULAU DULA SECTION OF TASIK KENYIR, TERENGGANU, MALAYSIA
1Kamaruddin, I.S., 1*A.S. Mustafa Kamal, 1A. Christianus, 2S.K. Daud and 1L. Yu Abit
1Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
2Department of Biology, Faculty of Science, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor, Malaysia.
Abstract
A study of zooplankton community was conducted in the Pengkalan Gawi – Pulau Dula section of Tasik Kenyir, Terengganu. Zooplankton is an animal type of plankton that constituted the second link in the food chain after phytoplankton. Four sampling stations were designated in this section and named as Station A (located at Pulau Dula), Station B (Sungai Ikan), Station C (Pulau Pupi) and Station D (Sungai Lawit). The zooplankton samples were collected monthly for 11 months from March 2008 to January 2009. The zooplankton net with a mesh size of 50µm and with a mouth opening of 50 cm in diameter was used in this study. The samples were counted and identified to the lowest taxonomic level using compound microscope (20X and 40X). The zooplankton community in this lake section was dominated by copepods with mean number of 38,899.05 ± 63642 organism/L, followed by cladocerans (37,432.30 ± 62817 organism/L) and rotifer (25,981.88 ± 17913 organism/L). The abundance of zooplankton showed no significant differences (p<0.05) between stations and months. However the dominant groups were obvious; copepods was dominant in Pulau Pupi, cladocerans in Pulau Dula and Sungai Ikan, while rotifer in Sungai Lawit. The results showed that the first seven months of sampling (March to September 2008) were dominated by the cladocerans and the final four months (November 2008 to January 2009) were dominated by the copepods. The abundant of zooplankton community as a basic food chain brought some impacts on the composition and biological processes of fish community in this lake section. From the data obtained, we could suggest that it is necessary to manage the lake in sustainable ways so that the roles of zooplankton as food sources in Pengkalan Gawi – Pulau Dula section of Tasik Kenyir continues.
Keywords: Zooplankton, Copepods, Cladocerans, Rotifer, Tasik Kenyir.
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